Target Q-Coverage Problem with Bounded Service Delay in Directional Sensor Networks

Target Q-Coverage Problem with Bounded Service Delay in Directional Sensor Networks
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定向传感器网络中有限服务延迟的目标 Q 覆盖问题

DOI:
10.1155/2012/386093
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发表时间:
2012-10
影响因子:
2.3
通讯作者:
Du, Hongwei
Du, Hongwei
中科院分区:
计算机科学4区
文献类型:
--
作者:
Li, Deying;Liu, Hui;Lu, Xianling;Chen, Wenping;Du, Hongwei

文献摘要

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最大化网络生存时间是目标覆盖问题的一个重要目标。方向传感器由于其易于制造和成本的降低而被广泛应用于无线传感器网络中以节省能量。在有界服务时延约束下,研究了有向传感器网络中延长网络生存时间的目标Q覆盖(TQC)问题。我们提出了一个协议,以找到一个集合的覆盖集,满足覆盖质量要求和有界的服务延迟约束,在每个覆盖集中的目标可能不会被连续服务,但可以与宽容的服务延迟。该协议通过控制部分传感器的定向天线,来应对网络拓扑结构的变化或监测任务。仿真结果表明,我们的协议的性能接近最优解的上界。
Maximizing network lifetime is an important objective for the target-coverage problem. With practicable manufacture and cost reduction, directional sensor has been widely used in wireless sensor networks to save energy. In this paper, we address the target Q-coverage (TQC) problem to prolong the network lifetime with bounded service delay constraint in directional sensor networks. We propose a protocol to find a collection of coverage sets that satisfy the coverage quality requirement and the bounded service delay constraint, where the target in each coverage set may not be served continuously but can be served with tolerant service delay. By steering some sensors' directional antennas, our protocol could deal with the changes of network topology or monitoring tasks. Simulation results show that the performance of our protocol is close to the upper bound of the optimal solution.
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